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고몰입형 인사제도와 종업원 몰입 관계에 대한 조직신뢰 및 심리적 임파워먼트의 역할에 관한 연구
정진철 ( Jin Chul Jung ),최태희 ( Tae Hee Choi ) 한국생산성학회 2010 生産性論集 Vol.24 No.4
The burgeoning literature on ways in which human resource management might lead to superior organizational performance and productivity includes reference to high commitment management, high involvement work practices, and high performance systems. While there are a number of theoretical and empirical research suggests that these management practices are not the same constructs and dimensions, a common point is the HR practices assumed causal link to organizational performance via the responses of employees. There were many attempts to identify the effectiveness of such HR system and practices, among which a few research has performed in order to improve our understanding of mediating variables inside the `black box` of the firms. This research is aimed to reveal the mediator roles of organizational trust and psychological empowerment on the relationship between high involvement HR system and employee commitment in relations to organizational commitment and change commitment. For this purpose, 278 employees who joined any public and private organizations completed the questionnaires and LISREL was employed. The findings are: Firstly, The empirical findings of the effects of the high commitment HR system on the organizational productivity in terms of commitment to organization and change were not supported. Secondly, the mediators of organizational trust and psychological commitment were predicted from the high Involvement HR system. Moreover, mediator roles of organizational trust and psychological empowerment on the relationship between high commitment HR system and organizational productivity were confirmed. Finally, some implications are included.
구조 및 입체 이성질체 디아민 함유 폴리이미드의 구조-특성 상관관계
유환철(Hwan-Chul Yu),정재우(Jae-Woo Jung),정진원(Jin-Won Jeong),정찬문(Chan-Moon Chung) 한국고분자학회 2015 폴리머 Vol.39 No.6
본 연구에서는 다양한 구조의 2무수물과 디아민 이성질체를 사용하여 폴리이미드를 합성하고, 폴리이미드의 화학구조-특성간의 상관관계를 연구하였다. 2무수물로서는 방향족과 지방족 구조를 사용하였고, 디아민은 phenylenediamine과 diaminocyclohexane 화합물의 구조 및 입체 이성질체 구조를 사용하였다. 합성된 폴리이미드의 용해성, 광투명성, 열적 특성 등을 조사하여 구조가 특성에 미치는 영향을 연구하였다. 1,2 디아민 함유 폴리이미드는 1,4 디아민 함유 폴리이미드에 비하여 용해성과 광투명성이 높은 것으로 나타났는데, 이는 1,2 디아민의 도입이 더 불규칙하게 구부러진 폴리이미드 구조를 가지게 하여 조밀한 분자 쌓임을 방해함으로써 결과적으로 분자간의 인력을 약화시킨 결과로 판단된다. 또한 지방족 디아민의 경우 trans < cis < trans-cis mixture의 순으로 폴리이미드의 광투명성이 높아지고 유리전이온도(Tg)가 낮아지는 것으로 나타났는데, 그 이유도 상기의 순으로 조밀한 분자 쌓임이 더 어렵기 때문인 것으로 판단된다. Polyimides have been prepared from a variety of dianhydrides and isomeric diamines, and their structure-property relationship has been studied. Aromatic and aliphatic dianhydrides were reacted with constitutional and stereo isomers of phenylenediamine and diaminocyclohexane. Solubility behavior, optical transparency, and thermal properties of the obtained polyimides were investigated and the effect of their chemical structure on the properties was studied. Polyimides based on 1,2 diamines showed higher solubility and higher optical transparency than those of 1,4 diamine-containing polyimides. This is probably attributed to more irregularly bent structures of 1,2 diamine-based polyimides. The bent structure would result in less close chain packing, and consequently, weaker intermolecular interactions between polyimide chains. In the cases of aliphatic diamine-based polyimides, optical transparency increased and glass transition temperature decreased in the order of trans, cis, and trans-cis mixture. This is also attributable to decrease in the degree of close chain packing in the same order.
정진형,서정철,곽민아,손기철,Jung, Jin-Hyung,Seo, Jung-Chul,Kwak, Min-Ah,Sohn, Ki-Cheul 대한한방내과학회 2014 大韓韓方內科學會誌 Vol.35 No.3
Objectives: This study was investigated in order to analyse the characteristics of recent Chinese medicine treatment of gastric cancer, and provide literature basis for the development of effective therapy of gastric cancer by reviewing Chinese journals. Methods: The literature on Chinese medicine treatment of gastric cancer were collected, analyzed and summarized from the China National Knowledge Infrastructure (CNKI) from 2000 to 2013. Results: Physicians have not shown consistent opinion with the pattern identification of gastric cancer. Recently, traditional Chinese Medicine patent prescriptions have been much used in the treatment of gastric cancer, which is classified into the reinforcement of healthy qi and elimination of the pathogenic factors. Chinese medicine combined with western medicine can improve the immune system and quality of life, while reducing toxic side effects. Conclusions: Further studies on traditional Chinese Medicine are needed to increase the survival rate of gastric cancer and effectiveness of combination therapy with western medicine.